1144664968 has 8 divisors (see below), whose sum is σ = 2146246830. Its totient is φ = 572332480.

The previous prime is 1144664957. The next prime is 1144665007. The reversal of 1144664968 is 8694664411.

It can be written as a sum of positive squares in only one way, i.e., 983324164 + 161340804 = 31358^2 + 12702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71541553 + ... + 71541568.

Almost surely, 2^1144664968 is an apocalyptic number.

It is an amenable number.

1144664968 is a deficient number, since it is larger than the sum of its proper divisors (1001581862).

1144664968 is a wasteful number, since it uses less digits than its factorization.

1144664968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143083127 (or 143083123 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 1144664968 is about 33832.8977180495. The cubic root of 1144664968 is about 1046.0669087956.

The spelling of 1144664968 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, nine hundred sixty-eight".